Corner mount and method and machine for making the same



Nov. 20, 1951 w. B. MINER 2,575,924 CORNER MOUNT AND METHOD MACHINE FORMAKING THE S Filed May 16, 1947 5 Sheets-Sheet 1 I INVENTOR BY WW J/WWNov. 20, 1951 w. B. MINER CORNER MOUNT AND METHOD AND MACHINE FOR MAKINGTHE SAME 5 Sheets-Sheet 2 Filed May 16, 1947 I I INVENTOgi. BYWflzam/Z/Zzwr NOV. 20, 1951 w, B M|NER 2,575,924

NER MOUNT AND METHOD AND HINE FOR MAKING THE SAME Filed May 16, 1947 3Sheets-Sheet 3 INVENTOR/ BY Z/Ml" Patented Nov. 20, 1951 OORNERMOUN TAND METHOD AND MA- CHINE FOR MAKING SAME Williamli. Miner, Reading,uMass., .assignor to Ace Art. Company, R

ading, Mass, a corporation of Massachusetts Application May 16, 1947,Serialbi'li.748,624

This invention relates to corner mounts for photographs, cards, or thelike, and to a method of and machine for making such mounts.

While not restricted to such material, the mount construction inaccordance with this invention is particularly suitable where the outerportion or cap which overlies the photograph or card when in use is madeof transparent material such as cellophane, or the like. This mountcomprises a pair of elements glued or otherwise cemented together, theouter or cap element comprising a layer having angularly related marginsfolded under and secured to the outer face of the second or baseelement. When a transparent mount is desired, the outer folded-in cap ismade of transparent material, while the other or base element maycomprise a flat piece of paper. In the making of such a mount, the capelement is formed by folding inwardly the end corners of a strip of capmaterial and then applying a punching from .a strip of the basematerial, the

punching having an activated adhesive for contact with the folded-incorners of the cap element.

In order to provide for properfeed, the machine provides for leavingthefolded cap element partly attached to a cap strip while the foldingof the cap for the succeeding mount is accomplished, the subsequentaction of the machine in presenting and attaching the base elementacting to completelycsever the mount from the cap blank after which thecap blank with the folded succeeding cap element :is presented to theposition where the base element is attached and a successive portion ofthe cap blank is folded.

For a complete understanding of this invention, reference may be had tothe accompanying drawings in which Figure 1 is a horizontal crosssectional view of a machine for making the mounts, the section beingtaken between the strip feeding and manipulating mechanism and the punchmechanism which latter is then in elevated position.

Figure 2 is a front elevation of the same and showing the lower end ofthe punch which stamps the base element of the mount from the base stripand applies it to the cap element.

Figure 3 is a right hand end elevation of the same.

Figure .4 is a detail sectional view on line 4-4 "of Figurel.

Figure 5 is a fragmentary top plan view of the cap strip manipulatingmeans in position after it has been cut inwardly in preparationfor theforwardcornersiat the cutxto lbe-inwardly folded. 1

4 Claims. (Cl. 40-1583) 2 Figure 6 is a detail sectional view on line6-6 of Figure 5, this view also showing the punch by which the baseelement is cut from the base strip material and presented against thecap.

Figure 7 is a view similar to a portion of Figure 5, but showing the capstrip corners folded.

Figure 8 is a detailsectional view on line 8-8 of Figure 7.

Figure 9 is a view similar to Figures 5 and 7, but showing the foldersretracted and the punch in section and applying the punching to thefolded cap element and severing it from its strip.

Figure 10 is a detail sectional view on line l0- ID of Figure '9.

Figure 11 is .a fragmentary plan view ofrthe folded cap strip. showingtwo units folded and just prior to the severance of the first from thecap strip.

Figure 12 is a fragmentary perspective view of the cap strip supportingdie plate.

Figure 13 is a detail sectional view on line l3l3 of Figure 12.

Figure 14 is an exploded perspective view of the cap and base elementsof a mount.

Figure 15 is a perspective view of the completed mount.

Referring to the drawings, the machine shown is of the general typeillustrated in the Riley Patent No. 1,627,667, the two strips from whichthe mounts are made being fed in angularly disposed relation, one abovethe other, the lower one being folded and the upper one being. punchedwhen it passes across above the lower end, the

punching being applied and cemented to the folded piece. In the case ofthe present invention, however, where it may be desired to employ atransparent cap, this cap is the folded member and the base element ispunched from the base strip and is secured to the folded element.

The cap strip Hi is fed in intermittently, as by the rotation of a feedroll H (Figure 1) having a segmental element i2 yieldingly fixed.thereto similar to the feed roll shown in Figure 8 of the Riley patenthereinbefore mentioned. This strip may Well be formed of very thincellophane where a transparent mount is desired. 'It is fed lengthwisealong the upper face of a die plate 15 and beneath a cover plate l6secured to the die plate as by screws I'I.

Toward its forward end, as shown best in Figure 12, the die plate I5 isprovided with a depression ll of a width to receive the strip In betweenits upstanding side edges 18. These side edges [8 terminate in a pair ofupstanding edge portions 19 arranged at right angles to each tween therolls 56 and 51.

, opening 26 is of the shape and size desired for the base member of thecorner mount and is provided with two rear side faces 21 arranged atright angles to each other and with their apex 2B in line with thenarrow neck portion22 of the die plate l5. folded extremity 30 of thestrip I5 is adapted Against these edges 21, the forward to contact,while a base element is being punched from the base strip and presentedto the folded corners of the cap element, as will later appear.

.. overlying the depression ll of the die plate isaresilient plate 35shaped to engage within this depression with sufficient clearance forthe material of the cap strip to extend upwardly between its forwardedges and the edges IQ of Q the recess, and at suitable times thisresilient plate is pressed into this depression so that the forwardcorners of the cap strip just back of the slots 2| are bent upwardly.These forward corners are defined by a pair of cuts (see Figure 11)extending inwardly from opposite sides of the cap strip which almostcome together centrally, and these cuts are formed by a pair of rotarycutting knives 40 which are carried by rotary shafts 4| at either side01365.35

the line of motion of the cap strip and which are arranged to passthrough the slots 2i as the shafts 4| are rotated in oppositedirections.

When the strip has been so cut, the spring folds up the corners of thestrip it! along the dotted lines shown in Figure 11 at either side ofthe central uncut zone 46. With the forward corners in this. upstandingposition. they are wiped down over the spring plate .35 as by a pair ofwipers 49 which are moved inwardly from opposite sides, successivepositions of these wipers being shown in Figures 5 and '7, the foldingbeing about to start in Figure 5 and completed in Figure 7. After thewipers have been retracted, the spring plate 35 is allowed to rise,lifting .the strip l0 from behind, the edge portions |9.,and thusfreeing the strip for the next feeding motion.

The second forward portion .of the strip l0 which has its corners thusfolded is at this time positioned against the walls 21 of the punchingdie in the position shown in Figure 6. This punching die has a seat 50at its upper end overlaid by a cover plate 5| and'through which is fed abase strip 52. This strip 52 is fed along the seat 50 intermittentlybetween the punching actions of the punch 53., The feeding means may,for example, be a pair of intermittently actuated feed rolls 56 and 5'!plate 35 is depressed within the recess Ii which-Z40 forated base stripis separated from the belt and is led to a suitable reel (not shown)where it may be rolled up as shown in the Riley patent to whichreference has been made. The belt feeds out the completed mounts.

The base strip is coated with adhesive on both faces, but its lower facewhich is turned toward the cap strip, and portions of which are appliedto the caps, is coated with such adhesive for only approximatelyone-half its width, this being the portion from its rear edge 60forwardly to form a zone 6|, the forward edge of which substantiallyregisters with the widest portion of the punch. opening.26 at therearward extremity of the inclined sides 27. This zone 6| is activatedas by -anysuitable moistening device so that when it passes across thedie opening, the activated portion is" above the folded-in cornerportions of the cap strip therebeneath. The die 53 is relieved fromapproximate alinement with therear ends of the walls, 21 rearwardly asat 65 so that the rear portion of the base element at 56 which extendsbeyond the end folded-in corners'of the cap is not presented to thefoldedin corners of the cap strip rearwardly of the forward end of thestrip. For example, as shown in Figure 11, the turned-in corners 61a arenot contacted by the portion 66 of the base strip, while the forwardturned-in corners 61 are contacted by the activated forward portion ofthe base strip. The activated adhesive portion of the base element isthereforerthe only part of the base punching which is presented to thefolded-in corners of the cap at theforward end of the cap strip.

As the punch 53 punches the base element from the strip 52 and presentsit against the turned-in corners 6'! at the forward end of the capstrip, this forward portion of the cap strip is depressed against aresiliently supported anvil Tllbeneath it, and the forward cap elementis torn away from the next one back of it at the narrow neck 30a. After,the punch 53 has been lifted, the cap strip may then be fed forwardly bythe next successive step to present the forward folded extremitiesagainst the edges 21 of the punching die, and the completed'mount is fedout from the punching die on the be1t'58. The next uncut section of thecap strip'is now in position for the rotary cutters 40 to form the nextsucceeding set of inward cuts from its between which is fed a belt 58which passes beneath strips 52 and 10 and'beneath the punch and die 24and 53. This belt may be an endless belt, being returned beneath themachine as 'is illustrated in the Riley Patent No.:1,'627,667,

the base strip, after the base elements have been punched therefrom,being passed with it be- The perforated base strip, together with thebelt 58, passes between edges preparatory to folding the corners of'thecap strip back from these edges as previously described.

All these mechanisms'are driven in suitable timed relation, the shafts4| which carry thecutters 40, being connected by miter gears and 9| witha cam shaft 92, which is connected through spiral gearing at 93 with ashaft 94. This shaft the plate 35, the other end portion of the lever mohaving a cam follower I03 actuated by a cam I04 carried by the cam shaft9 5. The feed'roll II is also carried by the cam shaft 96 and cooperateswith an idler feed roll Hllto feed thecap strip It. The punch 53 iscarried by the platen H2, being guided for verticalmotion on the poststhe feedrglls 56, and51, after which the per-.1 .16 H3 and H4, the postslltalsoservingto fulcrum the folder-actuating arms 98. Springs I I5surrounding the posts I I3 and I Hiserve to raise the platen and thedie, which may be depressed by any suitable means in time with theoperation of the rest of the machine, as shown, for example, in theRiley patent to which reference has been made.

The adhesive coating on the upper face of the base strip is notactivated during the making of the mount, this being reserved foractivation when it is desired to attach the corner mount to a supportingsurface such as the page of an album, or the like.

From the foregoing description of the corner mount and the method andmachine by which it may be made, it should be evident to those skilledin the art that various changes and modifications might be made withoutdeparting from the spirit or scope of this invention.

I claim:

1. The method of making a corner mount,

which comprises folding inwardly the forward corners of a strip ofmaterial, partly severing said strip fromlits side edges inwardly andspaced back from said corners and folding in the corners formed by andat the rear of such partial severing, and adhesively securing to saidcorners first folded in a base piece of sheet material and completingthe severance of said strip in substantial alinement with said partialseverance.

2. A machine of the class described, comprising means for supporting astrip, means for periodically cutting said strip inwardly from its edgesnearly to its center in alined relation while leaving a central zoneuncut, means for folding inwardly the corners of said strip back of eachcutting, means for feeding said strip forwardly step by step bysubstantially the width of said folded-in portions, a punching die inalinement with which said folded-in corners will register after asubsequent feeding step before which said cutting and folding means haveagain operated, means for intermittently feeding a base strip up sidedown and having an activated adhesive coating on a portion of its lowerface, a punch for said die, and means for periodically actuating saidpunch in said die to punch a base element from said base strip andpresent its activated face against the corners of said cap strip inalinement therewith and to complete the severance of the cap to whichsaid base element is so secured from the remainder of said cap strip atsaid central portion.

3. A machine of the class described, comprising a strip supporting platehaving a recess of a width to receive a cap strip and having a pointedforward wall formed by two rectangularly related edge faces, said platehaving a pair of oppositely disposed slightly spaced slots forwardly ofand adjacent to the point of said wall, a knife mounted for motionthrough each slot to cut a cap strip supported on said plate inwardlyfrom opposite sides leaving a narrow central uncut portion, means foractuating said knives, means for forcing said strip into said recess tolift the forward corners of said strip back from the line of said cuts,means for wiping said corners inward- 1y, means for intermittentlyfeeding said strip forwardly by substantially the width of said foldedcorners, a die forwardly of said plate and having wall openings opposedto and against which the front folded edge of said strip may engage,means for feeding a base strip having an activated adhesive on its lowerface across the top face of said die, and a punch movable through saiddie for punching a base piece from said base strip and presenting itsadhesively coated face against the folded corners of said cap strip andeffective to complete the severance of the forward folded portion towhich said base piece was so presented from the remainder of said capstrip.

4. A machine of the class described, comprising a strip supporting platehaving a recess of a Width to receive a cap strip and having a pointedforward wall formed b two rectangularly related edge faces, said platehaving a pair of oppositely disposed slightly spaced slots forwardly ofand. adjacent to the point of said wall, a knife mounted for rotationabout an axis to pass through each slot to cut a cap strip supported onsaid plate inwardly from opposite sides leaving a narrow central uncutportion, means for rotating said knives, means for forcing said stripinto said recess to lift the forward corners of said strip back from theline of said cuts, means for wiping said corners inwardly, means forintermittently feeding said strip forwardl by substantially the width ofsaid folded corners, a die forwardly of said plate and having wallopenings opposed to and against which the front folded edge of said capstrip may engage, means for feeding a base strip having an activatedadhesive on its lower face across the top face of said die, and a punchmovable through said die for punching a base piece from said base stripand presenting its adhesive coated face against the folded corners ofsaid cap strip and effective to complete theseverance of the foldedforward portion of said cap to which said base piece was so presentedfrom the remainder of said cap strip, said punch having its lower facerelieved over a portion of its area to thereby avoid pressing a portionof said base piece back of the folded corners of said cap strip againstsaid cap strip.

WILLIAM B. MINER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,174,487 Gallup et a1 Mar. 7,1916 1,627,667 'Riley May 10, 1927 1,913,110 Engel June 6, 19332,068,909 Engel Jan. 26, 1937 2,360,693 Lartz Oct. 17, 1944 FOREIGNPATENTS Number Country Date 356,581 Great Britain Sept. 10, 1931

